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				<div class="sectiontitle">Continuous Tie-downs ("Aussie" Tie-downs)</div>

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					The following table gives capacities for "continuous tie-downs". This type of tie-down is generally
					used for multi-story wood-frame construction, but has clear advantages for single-story buildings as
					well (see Appendix A of the Shear Wall Construction Guide). The Building Code of Australia (BCA)
					gives sizes for threaded rods to use as continuous tie-downs in its prescriptive shear wall
					requirements. This is the first code we are aware of to do this, hence the term "Aussie" tie-downs.<br />
					<br />
					<table>
						<thead>
							<tr>
								<th width="19%" colspan="1" rowspan="2">All-Thread Diameter (inches)</th>
								<th width="18%" colspan="1" rowspan="2">Allowable Force (pounds)</th>
								<th width="45%" colspan="3" rowspan="1">Plate Washer Size (inches)</th>
								<th width="18%" colspan="1" rowspan="2">Post Area (square inches)</th>
							</tr>
							<tr>
								<th width="15%">Width</th>
								<th width="15%">Length</th>
								<th width="15%">Thickness</th>
							</tr>
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							<tr><td> 3/8  </td><td> 2,700  </td><td> 3 </td><td> 1-1/2 </td><td> 1/4  </td><td> 7    </td></tr>
							<tr><td> 1/2  </td><td> 4,900  </td><td> 3 </td><td> 2-3/4 </td><td> 3/8  </td><td> 12.25</td></tr>
							<tr><td> 5/8  </td><td> 8,100  </td><td> 3 </td><td> 4-1/2 </td><td> 5/8  </td><td> 20   </td></tr>
							<tr><td> 3/4  </td><td> 11,700 </td><td> 5 </td><td> 4     </td><td> 5/8  </td><td> 29   </td></tr>
							<tr><td> 7/8  </td><td> 16,000 </td><td> 5 </td><td> 5-1/4 </td><td> 3/4  </td><td> 40   </td></tr>
							<tr><td> 1    </td><td> 20,900 </td><td> 5 </td><td> 6-3/4 </td><td> 1    </td><td> 51.7 </td></tr>
							<tr><td> 1-1/8</td><td> 26,500 </td><td> 5 </td><td> 8-1/2 </td><td> 1-1/8</td><td> 65.5 </td></tr>
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					<br />
					The above table is based on the following:<br />
					<ul class="bulletlist tightlist">
						<li>
							ASTM A36 steel rod, with an allowable stress increase of 33 percent for earthquake loading.
						</li>
						<li>
							Plate washer size is determined based on side-grain crushing of the wall top plate with an
							allowable stress (F<sub>Cperp</sub>) of 625 psi (Douglas Fir)
						</li>
						<li>
							Plate washer thickness is based on ASTM A36 steel with an allowable stress increase of 33
							percent
						</li>
						<li>
							Post Area is determined based on side-grain crushing of the foundation sill (mudsill) with
							an allowable bearing stress of 405 psi (Hem-Fir)
						</li>
					</ul>
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